Observed changes in the agroclimatic zones in the Czech Republic between 1961 and 2019


Trnka M., Balek J., Brázdil R., Dubrovský M., Eitzinger J., Hlavinka P., Chuchma F., Možný M., Prášil I., Růžek P., Semerádová D., Štěpánek P., Zahradníček P., Žalud Z. (2021): Observed changes in the agroclimatic zones in the Czech Republic  between 1961 and 2019. Plant Soil Environ., 67: 154–163.


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The paper shows a large-scale shift in agroclimatic zones in the territory of the Czech Republic (CR) between 1961 and 2019. The method used for agroclimatic zoning took advantage of high-resolution (0.5 km × 0.5 km) daily climate data collected from 268 climatological and 787 rain-gauge stations. The climate information was combined with soil and terrain data at the same resolution. The set of seven agroclimatic indicators allowed us to estimate rates of changes in agroclimatic conditions over the 1961–2019 period, including changes in the air temperature regime, global radiation, drought, frost risks and snow cover occurrence. These indicators are relevant for all main crops and agroclimatic zoning and account for local soil and slope conditions. The study clearly highlights major shifts in the type and extent of agroclimatic zones between 1961–2000 and 2000–2019, which led to the occurrence of entirely new combinations of agroclimatic indicators.


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